You may want to have a look on Etherdelta Guard Chrome Extension (FYI: I built it). I open sourced it https://github.com/paxpelus/etherdelta-guard and you can download the plugin here https://chrome.google.com/webstore/detail/etherdelta/beeeoaa...

When etherdelta deploys - they call a script of mine that calculates the md5 of their files in github and creates automatically a new version in Chrome Web Store.

I use my plugin whenever I visit etherdelta so I can be sure that their deployed version matches the one on github.com